Landscape Management

Bioretention

Bioretention “cells” are shallow depressions filled with amended soil mix, topped with a layer of mulch, and planted with dense vegetation. Storm water runoff flows into the cell and slowly percolates through the soil (which acts as a filter) and into the groundwater; some of the water is also taken up by the plants. Bioretention areas are usually designed to allow ponded water 6-8 inches deep, with an overflow outlet to prevent flooding during heavy storms.

Bioswale

A bioswale is nature used as technology. They are storm water runoff conveyance systems that provide an alternative to storm sewers. They can absorb low flows or carry runoff from heavy rains. They improve water quality by infiltrating the first flush of storm water and filtering the large storm events.

Native Vegetation

Native grass/flower (prairie) plants can help restore and enhance soil quality and improve storm water infiltration rates. These species will survive both wet and droughty periods.

Rain Garden

A rain garden is a shallow depression that typically collects water from impervious surfaces such as roofs and allows plants, bacteria, and soil to filter the water.

Designed not to hold water for more than 12-24 hours.

It is as simple as digging or locating a shallow depression where water collects in your yard and planting with perennials. Installation Guide (includes site prep. and plant types)

Downspout Management

Change the direction of your downspout. If downspouts are draining directly onto a sidewalk or driveway, can they be re-directed to the lawn?

"French" Drains: Must be kept away from foundations and above the water table

Rain Barrels: A great way to conserve water for watering flower/vegetable gardens. Downspouts should be screened to bypass large storms.

Soak A-Way Pits/Dry Wells: Designed to receive runoff from individual roof leaders. They are small excavated pits, backfilled with rock.

Water Management Design Resources

Use these resources to design water management features in your landscape.